Results 31 to 40 of about 1,939 (269)

Research on key technologies of 3D laser scanning modeling in fully mechanized working face

Gong-kuang zidonghua, 2022
According to the boundary information of the coal wall and roof in the 3D laser scanning model of fully mechanized working face, the shearer can automatically adjust the cutting height of the drum to realize the coal precise mining. The existing technology realizes the automatic extraction of the roof line of coal cutting based on the laser point cloud
RONG Yao, CAO Qiong, AN Xiaoyu, WEN Liang, ZHAO Yunfei   +4 more
openaire   +3 more sources

Design of remote operating station of support of fully-mechanized automation system

Gong-kuang zidonghua, 2016
In view of the problem that existing fully-mechanized automation system of working face takes manual operation means as main control means which needs more staff present, a remote operating station of support of fully-mechanized automation system was ...
YAO Yupeng
doaj   +2 more sources

UWB based measurement system for pushing progress of fully mechanized working face

Gong-kuang zidonghua
A real-time measurement system for the pushing progress of fully mechanized working face based on UWB ranging technology is proposed to address the problems of existing measurement and calculation methods, such as time-consuming, labor-intensive, large cumulative errors, and inability to recalculate after sensor damage.
LIU Qing, LIU Junfeng
openaire   +3 more sources

Real-time 3D mapping method of fully mechanized working face based on laser SLAM

Gong-kuang zidonghua, 2022
The mobile mapping method relies on fiber optic inertial navigation with high precision and odometer to calculate the position and attitude. But in the actual engineering practice, the precision of odometer is difficult to meet the application requirements, resulting in incomplete 3D laser point cloud of working face.
QI Yuhao, GUAN Shiyuan
openaire   +3 more sources

Research on information model of coal mine fully mechanized mining equipment based on industrial Internet

Gong-kuang zidonghua
The equipment for coal mine fully mechanized working faces comes from different manufacturers, with inconsistent interfaces, different data systems and business logic, resulting in data barriers and slow data exchange between systems.
PAN Wenlong, LI Shengjun, GAO Quanjun, YANG Luyu, LIU Qingfu, ZHANG Heming   +5 more
doaj   +2 more sources

Design of height measurement sensor for hydraulic support in fully mechanized working face

Gong-kuang zidonghua
A hydraulic support height measueement sensor based on Pascal's law is designed to address the difficulties in measuring the height, reliability, and stability of hydraulic supports in fully mechanized working faces. The height measurement sensor is equipped with a slender liquid tube, which is filled with methyl silicone oil.
GAO Siwei, GU Minyong, LI Dianpeng
openaire   +3 more sources

Coal mine intelligence，mine 5G and network hard slicing technology

Gong-kuang zidonghua, 2021
In order to reduce the number of operators in the working face of coal mines, an unmanned 5G ground remote control method for working face is proposed.
SUN Jiping
doaj   +1 more source

Sudden change mechanism of mine pressure in fully mechanized caving face and its countermeasures

Meikuang Anquan, 2022
In view of the sudden change of mine pressure in 226 upper 02 fully mechanized caving face of Huangyuchuan Coal Mine, the mechanism and countermeasures of sudden change of mine pressure in fully mechanized caving face are studied by using the methods of
LI Yong, WANG Zhuoying
doaj   +1 more source

UDEC Numerical Analysis for Surface Subsidence Characteristics Under Different Mining Methods

Meikuang Anquan, 2020
UDEC is used to analyze the surface subsidence characteristics under different steps of fully mechanized and layered mining face. The research results show that the trend of surface subsidence in the lower layer mining face and the fully mechanized ...
LIU Zhaoxing
doaj   +1 more source

Determination of real-time working resistance of support in fully-mechanized working face of medium-thickness coal seam

Gong-kuang zidonghua, 2016
In order to study evolution of real-time working resistance of hydraulic support with roof breaking in fully-mechanized working face of medium-thickness coal seam, a mechanical model of main roof was established based on elastic foundation beam, and law of main roof movement was analyzed.
CHEN Lei
openaire   +3 more sources